we do have some information tonight,cbsnewsreportedthat a saudi was actingsuspicious,nbcsaidhere a young person on a student visa. we aren't trying to jump the gun, we are trying to confirm any information they have. you have seen the reports. what can you tell us about them? >> the information we can report is the boston police say they do not have a suspect in custody. but what we know through our reporting is they had a person of interest that they were questioning and based on my report this evening, i believe one of these individuals was here on a student visa but that's really as far as we can go this evening. >> thanks so much for being with you. >> you're welcome. >> let's go back to mark furman to get his reaction of what we just heard. mark, did you glean anything out of that? >> certainly, sean. governor ridge was right on in everything that he said. we do not know exactly what the device is. i think they are sophisticated but they weren't sophisticated to all go off so something went sideways with this plan. and perhaps the person that was to detonate them remote